Jean Piaget proposed that cognitive development reaches full maturity at formal operations; however, contemporary researchers propose that this is not the case, but rather that cognitive maturity extends into ____

Which of the following does not fully mature until adolescence, which may be the reason that children have such short attention spans?

a. thalamus b. hypothalamus c. reticular formation d. amygdala

Societal messages can often lead girls to conclude that __________.

A. race is a valid concept B. academic achievement is a roadblock to social success C. socioeconomic status has little influence on educational attainment D. psychological development is more important than physical characteristics